<template>
  <div>
    <div class="search">
      <input class="search-input"
             v-model="keyword"
             type="text"
             placeholder="请输入城市名或拼音">
    </div>
    <div class="search-conetent"
         v-show="keyword"
         ref="search">
      <ul>
        <li class="search-item border-bottom"
            v-for="item of list"
            :key="item.id"
            @click="handleItemClick(item.name)">{{item.name}}
        </li>
        <li class="search-item border-bottom"
            v-show="hasListData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'

  export default {
    name: 'Search',
    props: {
      cities: Object
    },
    data () {
      return {
        keyword: '',
        list: [],
        timer: null
      }
    },
    methods: {
      handleItemClick: function (city) {
        //方式一
        //this.$store.dispatch('changeCity',city);
        //方式二
        this.$store.commit('changeCity', city)
        this.$router.push('/');//跳转到首页
      }
    },
    computed: {
      hasListData () {
        return !this.list.length
      }
    },
    watch: {
      keyword () {
        if (this.timer) {
          clearTimeout(this.timer)
        }
        if (!this.keyword) {
          this.list = []
          return
        }
        this.timer = setTimeout(() => {
          const result = []
          for (let i in this.cities) {
            this.cities[i].forEach((val) => {
              if (val.spell.indexOf(this.keyword) > -1 ||
                val.name.indexOf(this.keyword) > -1) {
                result.push(val)
              }
            })
          }
          this.list = result
        }, 100)
      }
    },
    mounted () {
      this.scroll = new Bscroll(this.$refs.search)
    }
  }
</script>

<style scoped lang="stylus">
  @import "../../../assets/styles/varibles.styl"
  .search
    height: .72rem;
    background $bgColor
    padding 0 .1rem

    .search-input
      box-sizing border-box
      height .62rem
      width 100%
      padding 0 .1rem
      text-align center
      border-radius .06rem
      color #666

  .search-conetent
    position absolute
    overflow hidden
    top 1.56rem
    left 0
    right 0
    bottom 0
    background #eee
    z-index 1

    .search-item
      line-height .62rem
      padding-left .2rem
      background #fff
      color #666
</style>
